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Finding the Third Proportional to 399,698.50 and 856,376.50

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Solution

The third proportional to 399,698.50 and 856,376.50 is: 1,834,834.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,698.50 : 856,376.50 = 856,376.50 : x
  2. Step 2: Convert to fraction form
    399,698.50/856,376.50 = 856,376.50/x
  3. Step 3: Cross multiply
    399,698.50x = 856,376.50 × 856,376.50
  4. Step 4: Simplify right side
    399,698.50x = 733,380,709,752.25
  5. Step 5: Solve for x
    x = 733,380,709,752.25/399,698.50
  6. Step 6: Final answer
    x = 1,834,834.78

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.